Q546
By how many of the following numbers is 212 - 1 divisible ? 2, 3, 5, 7, 10, 11, 13, 14
A.
4
AnswerB.
5
C.
6
D.
7
Answer: Option A
Solution
Answer: Option A
Solution:
(212 - 1) = (4096 - 1) = 4095, when is clearly divisible by 3, 5, 7 and 13 i.e., four numbers in all.